Is VC# Express Beta suitable for development of commercial products?

Question

Hi, Just a quick question. I have been given a pitch to write a piece of software which will primarily be aimed at family / home users. C# would be the ideal language, especially with the new extensions available in .NET 2.0. At the moment I am using VC# 2005 Express for development. If I write the software using the current beta of VCSE, is it likely to be broken by changes to the .NET runtimes or language changes before the final release? Also, is it legal to sell software created with the beta version of VC# Express?